Air carrier large transport speed deviation after accepting a clearance with assigned airspeed to IA...

Attributes
ACN	86353
Time
Date	198804
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : san
State Reference	CA
Altitude	msl bound lower : 2000 msl bound upper : 5000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : san
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent : approach descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 18000 flight time type : 3000
ASRS Report	86353
Person 2
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	non adherence : clearance other anomaly other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Aircraft cleared for localizer/DME approach to maintain 190K to initial approach fix. Aircraft was descending to IAF altitude and flaps and landing gear extended to aid descent (minimum speed limitation for use of flight spoilers on this aircraft is 200 KIAS). Upon reaching IAF altitude, flaps were partially retracted to aid in maintaining airspeed. Airspeed was allowed to decay to 180-170K and approach was not advised by pilot. Approach questioned if 190K speed restriction was received. This was acknowledged. Aircraft was changed to tower frequency and landing accomplished. Following aircraft landed with adequate spacing and was given no speed reduction, to this crews' knowledge. Crew was in error by not advising approach of reduction in assigned airspeed. 190K speed at IAF in IFR conditions is excessive to accomplish normal approach and descent confign to landing. Published speed for this aircraft is 140 KIAS at least 2 NM prior to IAF.

Original NASA ASRS Text

Title: ACR LGT SPEED DEVIATION AFTER ACCEPTING A CLRNC WITH ASSIGNED AIRSPEED TO IAF.

Narrative: ACFT CLRED FOR LOC/DME APCH TO MAINTAIN 190K TO INITIAL APCH FIX. ACFT WAS DESCENDING TO IAF ALT AND FLAPS AND LNDG GEAR EXTENDED TO AID DSCNT (MINIMUM SPD LIMITATION FOR USE OF FLT SPOILERS ON THIS ACFT IS 200 KIAS). UPON REACHING IAF ALT, FLAPS WERE PARTIALLY RETRACTED TO AID IN MAINTAINING AIRSPD. AIRSPD WAS ALLOWED TO DECAY TO 180-170K AND APCH WAS NOT ADVISED BY PLT. APCH QUESTIONED IF 190K SPD RESTRICTION WAS RECEIVED. THIS WAS ACKNOWLEDGED. ACFT WAS CHANGED TO TWR FREQ AND LNDG ACCOMPLISHED. FOLLOWING ACFT LANDED WITH ADEQUATE SPACING AND WAS GIVEN NO SPD REDUCTION, TO THIS CREWS' KNOWLEDGE. CREW WAS IN ERROR BY NOT ADVISING APCH OF REDUCTION IN ASSIGNED AIRSPD. 190K SPD AT IAF IN IFR CONDITIONS IS EXCESSIVE TO ACCOMPLISH NORMAL APCH AND DSCNT CONFIGN TO LNDG. PUBLISHED SPD FOR THIS ACFT IS 140 KIAS AT LEAST 2 NM PRIOR TO IAF.

Data retrieved from NASA's ASRS site as of August 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Air carrier large transport speed deviation after accepting a clearance with assigned airspeed to IAF.